Governor attachment for separators



(No Model.) g j A 25 sheets-$115551.

J. OVBRHOLS-ER.

GOVERNOR ATTACHMENT FOR SEPARATORS.

No. 515,358. Patented Feb. 27,;1894.'

2 Sheets-Sheet 2.

(No Model.)

. g AJ, OVERHOLSBR. GOVERNOR ATTACHMENT FOR SEPARATORS. No. 515,358.Patented Feb. 27, 1894.

f wie /59 Ntra n'rns A'rnivfr Enron@ JOHN OVERHOLSER, OF COTTAGE GROVE,OREGON.

GOVERNOR ATTACHMENT FOR SEPARATORS.

SPECIFICATION forming part of Letters Patent No. 515,358, dated February27, 1894.

Application tlledil'une 29,1892. Serial No. 438,430. (No model.)

To @ZZ whom it may concern,.-

Be it known that I, JOHN OvERHoLsER, of Cottage Grove, in the county ofLane and State of Oregon, have invented certain new and usefulImprovements in Governor Attachments for Separators; and I do herebydeclare the following to be a full, clear, and exact descript1on of theinvention, such as will enable others skilled in the art to which itappertains to make and use the same.

This invention relates particularly to an automatic regulator attachmentfor grain separators and the object ot my invention is to provide asimple device which will secure a uniformity of motion, at all times,among the various parts of the separator and a further object of myinvention is to providea device of this character that can be quicklyand easily attached to separators now in use.

With these objects in View, my invention consists essentially of a pairof expansible and contractible pulleys, connected by an endless belt, agovernor and intermediate connections between the pulleys and governorfor automatically and simultaneously operating the pulleys, to regulatethe speed.

My invention consists further in providingl certain details ofconstruction and combination of parts whereby these objects areaccomplished, as will be more fully explained hereinafter and pointedout in the claims.

In the accompanying drawings-Figure l is a view showing the manner ofapplying my automatic regulator to a separator. Fig 2 is a top-plan viewof the improved device, the expansible pulley being shown in section andthe governor omitted. Fig. 3 is a vertical sectional vieW on the planeof line 3 3, of Fig.

2, illustrating the connection between the governor and regulator, thepulleys being omitted. Fig. 4 is a detail view ot one of the expandingpulleys. Fig. 5 shows other details of construction. Fig. 6 shows on anenlarged scale the essential features ot' Fig. 1. v

Referring to the drawings, 10 indicates the pulley upon the end ofbeater shaft, and 1l the pulley for driving the fan. Between thesepulleys I interpose my improved automatic regulator consisting of theexpanding pulleys 12, 12, the governor 14, and automatic governorattachment 15, arranged betweenY said pulleys, and the endless belt 16,connecting these pulleys. Thel pulleys 12, 12, are mounted upon thehorizontal shafts 13 and 13a and are each composed ot' the disks 12b and12c and the series of expansible sections 12d arranged between thedisks. The disks 1.2b are each formed witha series of radial slots 12eand upon the outer faces ofthe disks, upon opposite sides of the slotsare produced the parallel lugs or ears 12f. Bell crank levers 12g arepivoted between these lu gs or ears, their inner ends being passedthrough the slots and connected with their respective sections 'l2dwhile the outer ends are connected with the sliding collars 12h mountedupon the shafts 13 and 13a. By this construction it will be seen that asthe collars 12h are slid to and from the disks 12b the sections will beexpanded or contracted, increasing or diminishing the diameter of thepulleys. A pulley 10a is mounted upon the outer end of the shafts `13and a pulley 11LL is mounted upon the outer end of shaft 13a; endlessbelts 101 and 11b connecting said pulleys with the beater and fanpulleys respectively. The endless belt 16 connects the expansible pulley12 thus establishing a connection between the beater and fan shafts.

The expansible and contractible pulleys are employed for the purpose ofsecuring uniformity of speed, said pulleys being expanded or contractedas becomes necessary to maintain the predetermined speed by means of thegovernor 14, one pulley being contracted as the other is expanded inorder to utilize less shift from the governor and also to keep the belt16 taut. New for the purpose of establishing a connection between thepulleys and governor and also for moving the pulleys simultaneously, Iprovide an improved governor attachment 15 which consists of ahorizontal lever 15a pivoted centrally upon a vertical shaft 15b theopposite ends of the lever being connected with the sliding collars 12hof the pulleys 12. The lever 15 is provided with a rearwardly projectingarm l5c having a T- shaped head the outer edges ot' which are formedwith oppositeluvr disposed ratchet teeth 15'1 as clearly shown. Ahorizontal rod or bar 15 is secured upon the shaft 15b beneath the arm15G, and carries upon its upper face near its rear end, oppositelydisposed pawls 15f adapted to engage the ratchet teeth upon the rear endof the arm 15C. Above this arm and upon the vertical shaft is pivoted ashifting lever 15g connected at its forward end with the governor asshown and at its rear end is provided with a cross-bar or linger 15hadapted to rest normally between the pawls and ratchet teeth holding thepawls out of engagement. A pit-man rod 17 connects the rear ends of theshaft 13 and pawl carrying rod 15, wrist pins being employed to effectthe connections and vi-brate the said arm while the shaft 13 is inrevolution. A cross-belt connects the shaft 13a andgovernor shaft.

The parts being arranged in their normal positions, the operation of mydevice is as followsz-The power is applied to the beater pulley 10 andcommunicated to the pulley 10a upon the end of shaft 13 by belt 10b. Thebelt 16 then transmits the power to the expansible pulley upon the shaft13a and from said shaft it is transmitted to the fan shaft by means ofpulley 11 and belt 11b. The shaft 13qu and governor shaft beingconnected by means of a cross-belt, any irregularity in the revolutionof the shaft 13L will be communicated to the governor, which, in turnwill act to move the shifting lever 15g either to the right or leftthrowing one pawl out of engagement with the ratchet and allowing theother to engage the adjacent teeth. The constant vibration of the pawlcarrying arm in connection with the pawls will operate to move the leverarm either to the right or left as the case may be, and thus cause theoperating -lever to expand one of the pulleys and simultaneouslycontract the other. Should the shaft 13 be running too slow it is obvi-'ous that the governor and attachment will be operated to contract thepulley on that shaft and expand the pulley on the shaft 13. Should theshaft 13 be running too fast the opposite operation of course takesplace, thus reducing the speed.

From the above it will be seen that l provide an expansible pulley thatcan be quickly and easily operated as desired and also means forregulating said pulley simultaneously and automatically, therebysecuring a uniformity of speed between t-he fan and shoe operatingshafts; the shoe being preferably driven from the fan shaft, and it willbe seen that as the fan shaft is regulated, the shoe shaft will beregulated accordingly. When the shoe, however, is operated independentof the fan, my

improved regulator is then interposed vbetween the shoe and its sourceof power.

I claim as my invention- 1. In a regulator of the class described, thecombination with the expansible and contractible pulleys and endlessbelt, of a lever pivoted between the pulleys and connected therewith toexpand and contract the same, a governor, and mechanical connectionsbetween the lever and governor, substantially as and for the purposedescribed.

2. ln a regulator of the class described, the combination with theexpansible and contractible pulleys and endless belt, of a lever pivotedbetween the pulleys and connected therewith, a vibratory rod or baradapted to operate said lever, a shifting lever adapted to regulate saidarm, and the governor connected with said shifting lever, substantiallyas and for the purpose described.

3. The combination with the expanding pulleys and shafts upon which theyare mounted, of the endless belt connecting the pulleys, the operatinglever pivoted between the pulleys and connected therewith,y thevibrating rod or bar .adapted to engage said lever, the pitman rodconnecting one of the shafts and said arm, the governor connected withthe other shaft, and ashifting lever connected with the governor'andadapted to regulate the engagement of the vibratory arm, substantiallyas shown and described.

4. The combination with the expansible pulleys and shafts, of theendless belt, the opera-ting lever having one-arm provided with ratchetteeth, the vibratory rod or bar carrying pawls adapted to engage saidteeth, the pitman rod connecting said arm and one shaft, the shiftinglever having a cross-bar or finger, and the governor connected with saidlever and also with the other shaft, substantially as shown anddescribed.

5. The combination with the expansible `pulleys and shafts, of theendless belt, the

sliding collars, the operating levers connected with the collars andcarrying an arm` having ratchet teeth, of a vibratory paWl-carrying rodor bar, the pitman rod attached to said arm, the shifting lever having across-bar or finger, and the governor connected with said lever and witha shaft, substantially as shown and described.

In testimony whereof I have signed this specification in the presence oftwosubscribing witnesses.

JOHN OVERHOLSER.

Witnesses:

J. S. MEDLEY, Guo. MCQUEEN.

IOO

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